Low-level call control functions

The following functions provide low-level access to the line interface. This access is typically needed only when using the NOCC (no call control) protocol. These functions are used when the application is directly controlling the line interface or when a CAS protocol is not needed. Use these functions carefully, especially if you are running a telephony protocol.

The following ADI functions provide low-level call control:

Function	Synchronous/ Asynchronous	Description
adiAssertSignal	Synchronous	Asserts an out-of-band signaling pattern. adiAssertSignal returns before the pattern is actually asserted.
adiStartPulse	Asynchronous	Pulses an out-of-band signaling pattern for a duration.
adiStartSignalDetector	Asynchronous	Starts detection of out-of-band signaling bits.
adiStopSignalDetector	Asynchronous	Stops detection of out-of-band signaling bits.
adiQuerySignalState	Asynchronous	Queries the current inbound out-of-band signaling bits.
adiStartDial	Asynchronous	Starts DTMF/ MF/pulse dialing of digits.
adiStopDial	Asynchronous	Stops DTMF/MF/pulse dialing of digits.